Wells – Processes – Specific pattern of plural wells
Patent
1986-09-15
1987-09-08
Suchfield, George A.
Wells
Processes
Specific pattern of plural wells
166261, 166263, E21B 43243, E21B 4330
Patent
active
046917713
ABSTRACT:
Oxygen is injected into a petroleum bearing subsurface formation penetrated by production well and the petroleum in the formation is subjected to in-situ combustion to heat the formation in a zone surrounding the production well. After heating by the in-situ combustion, heated hydrogen is injected into the heated formation zone by way of the production well. By way of another well penetrating the petroleum bearing subsurface formation and spaced from the production well, fluid is injected into the formation to drive petroleum in the formation between the two wells to the production well for recovery. Hydrogenation of the petroleum occurs in the heated zone in the presence of hydrogen therein.
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Rose Leslie C.
Ware Charles H.
Suchfield George A.
WorldEnergy Systems, Inc.
Zobal Arthur F.
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